CVE-2025-10838

Tenda AC21 WifiExtraSet sub_45BB10 buffer overflow

HIGH
8.8
CVSS Score
Published: September 23, 2025 at 04:32 AM UTC
Updated: October 11, 2026 at 08:10 PM UTC
1 product affected across 1 vendorAC21 Firmware· also runs on 1 platform

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Severity
HIGH8.8
Exploit prediction
EPSS 1%
SSVC
PoC

Description

A vulnerability was identified in Tenda AC21 16.03.08.16. The affected element is the function sub_45BB10 of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 16.03.08.1616.03.08.16
tenda-ac21 (same device)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (6)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.325200
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.325200
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.657126
Product
Source: cverecord
https://www.tenda.com.cn/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-120CWE-119

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